XPYI301204 InstructorPhilipM-1

10 E - 1 E
1 E - 1:45 E Lunch
1:45 - 4:45 E

VS Code / Web 
Juypter Notebook / CoLab
Visual Studio / Intellij

variable name firstName   data type string
property = variable name data type

assign value to properties

firstName = "Bob"
age = 40   age as int assigned value of 40

=
==
===

# docstring h1
## h2
### h3

FIRSTNAME

break 11:35 E - 11:50 E
page 10 math...
philipm@onlc.com

Order of Presidence wrapper

arithmetic operators Excel
Python Core or Math Modules

1 + 2 * 3 = 7
(1 + 2) * 3 = 9

int or decimal do not wrap the value in ` ' " " ' `

+ add
+ join / concat

"21" + "47" = 2147
21 + 47 = 68
"21" + 47 !error
int("21") + 47 = 68
"21" = 47.toString() = 2147

PYTHON gets the data type from value assignment IMPLICITLY
21 int
"21" string
vipStatus = True boolean
vipStatus = "True" string

string vipStatus;
vipStatus = "False"

variable name vipstatus
data type string
value False
types: data,ref,class,provider,interface,custom,error

debug code  IDE 


syntax errors debugging "Problems"
runtime errors code syntax correct > oninit()  contacts.csv
exception errors onSubmit()

'char' and "string"
OOP

"Philip" = ['P','h','i','l','i','p'] len(6) range 0-5

firstName[0]   print 'P'
firstName[5]   print 'p'

byte > char > string[a-z][A-Z][0-9]  'b' < '9'

fName
fname
firstName
first_name

fname
lname
add1
add2
city
st
zip


statically typed in the code 

flat file
stdin terminal input()
db
csv
form input
cookie
session variable
localStorage
api
web service
json
odbc
jdbc

lunch 1:05 E - 1:50 E
philipm@onlc.com

[bracket
{braces
(round brackets
. dot notation

static value
input() value
looping
  while control OUTSIDE of the loop
  for control INSIDE of the loop

1. test (condition)
2. index (control)
3. break (continue) 



for x in ys: # ys data from 
   todos
   x is varible INSIDE scope

VIRT > Tools>Preferences checkbox copy/paste

h1-h6

x = "Bob"  1 dim assigned value
y = "fname" 2 dim col   (x row) (x,y) (row,col)
z pivot   3 dim  z (x,y) 
g1 z (x,y) 4 dim 
g2 g1 (x,y) 5 dim
g3 g2 g1 (x,y) 6 dim
g4 g3 g2 g1 (x,y) 7 dim

fName = "Bob" > memory

lab till 3:20
break 3:20 - 3:35 E

What contact do you want to update? 3
Traceback (most recent call last):
  File "c:\python\my_python\chapter2.py", line 57, in <module>
    firstNames[contactIdToUpdate] = "Robert"
TypeError: list indices must be integers or slices, not str


int( input(str) )


contacts {
  contact {
"fname": FIRSTNAME
 } #
} #


Day 2 10 EST - 4:45 EST

dict contact
12 contacts > List

[ { k:v },
  { k:v },
  ....
]


input(ccNum)
input(ccExp)
input(ccCVC)
call("4111","12/25",452)   inputted
def(ccNum, ccExp, ccCVC)  params
api(p1,p2,p3) api merchant

arg> param
input> output
import> export
get>post
inj>class

contacts ()
contacts.append() inValid
contact[0] = "new cc num"


https://onlclabs.com/python/12042023/
break 11:25 E - 11:40 E
labs for tuples page 30 reference

str + tuple.item
str, tuple.item

List [12,52,24,98,52]  len(5) range(0-4) R/W append dups
12,52,24,98,52

Tuple (12,52,24,98,52)  len(5) range(0-4) R dups
12,52,24,98,52

Set {12,52,24,98,52} len(4) !dups !range(!sort,!index)
52,98,12,24
98,24,12,52
24,12,98,52

products = {}

App
factory
PROVIDERS
services
  Memory <<<
classes
objects  > API  COVERT userInputs()
prop = var and data type
assign prop
values   .format()
template
view

create a new chapter3.py file
basic function page 38
main function page 35
back to the normal page order

for x in ys

{ # sets  ys
 { #set x
 ( string, int  ) #row   row, col
 } , 
 { 
  [int, int, int]   row, col
 },
 {
  (dt, bool, string)  row, col
 },
 {
   { k:v }   row col
 }
}

for ys in dim4:
 for x in ys.dim4:    for set in sets
  for row in x.ys#.dim4:  
    print(row,col)


for tuple in set
                  for list in set
                  for tuple in set	
		  for dict in set

1. define it  kite  ? access
2. give it value  lightning    147
3. return it string  ? last one

Class.Obj.method().method().value


def orderTotal(cart_total):
    taxRate = 7
    orderSubTotal = cart_total
    orderTax = orderSubTotal * ( taxRate / 100 )
    orderTotal = orderSubTotal + orderTax
    print(orderTotal) # last step  give it value

4 pages
home
orders
contacts 
products

break 3:30 E - 3:45 E
return the userInputs()

3 types of functions

def myfunc()  empty parameter

def myfunc(param1, ...) parameterized function

def myfunc(param1="value", param2, ...) query string parameter


public static void main(string[] args) {
}

Program.cs
Program() 

Angular
app.Module


main()

if __name__ == "__main__":
  main()

main  visible
_main hidden / anonymous lambdas
__main Property / meta

Property = object Property type
property = var with data type

Day 3 10 EST




python core  < print() input() int() 
python standard < installed csv datetime  import
customs < your coding or pip import

myapp.py < main runtime 
myfunctions.py < library of functions

shopping cart
contacts.py  addNewAddress()  updateAddress()
accounts.py  changePassword()
shop.py
cart.py  addToCart()
creditcardproc.py
orders.py


import ModuleName (filename without the .py)
from ModuleName import Class or Object Name
import ModuleName as Namespace

DRY
Law of Demeter
Pythonic
Lambda   name = lambda params: exp
Ask the Question? define, value, return

def fullname(fName, Name): # Object
 first_name = fName # Prop
 last_name = lName # Prop
 fullname = fName, lName  
 return fullname # View

def fullname(fName, Name):
 fullname = fName + ' ' + lName  # Property
 return fullname # View

full_name = lambda firstName, lastName: f"{firstName} {lastName}"
# view

lab 11:45 E
break 11:45 E - 12:00 E
page 43 lambda operation

arthimetic op  * / + - ...
comparison op == < > ...
logical op AND OR NOT  & && | || !
assignment += -= *= =
bit op  
membership op  in  not not ["FL","IA"]
identity op is is not
string op
list, tuple, dict, <set> operations
control flow op  if for <switch, break, else if>

DateTime Modules
mm/dd/yyyy HH:MM:S.MMMM UTC+0

todaysDate = "12/06/2023"   
property __name__   todaysDate
property type       data / string
property value      12/06/2023

todaysDate1 = 12/06/2023 12:31:24.124758 UTC+0
property __name__   todaysDate1
property type       Class / DateTime
property value	    12/06/2023 12:31:24.124758 UTC+0

Today's Date is + ? string

Net30DueDate = todaysDate1 + 30	

1. New Type Class
2. DateTime Module > Standard Module import keyword BUT from / import keyword

datetime Module
 time Class > specific time independent date !international 
 date Class > specific date independent time !UTC 00:00.0.0000
 datetime Class > specific date time UTC datetime stamp

import datetime # import Module

datetime.datetime.function()  #Module.Class.function()

from ModuleName import Class
from datetime import datetime
from datetime import date

datetime.function() # Class.function()

{}
purple square
orange tree

lunch 1:05 E - 1:50 E
lab datetime Module page 67

break 3:25 E - 3:40 E
write to our csv file
add the Exception if the file does not exist  try except finally


Exit Code 0  passed 
 Exception Handler  try finally

Exit Code 1  failed <<<<